Gitea < 1.16.4 DoS Vulnerability

# Copyright (C) 2022 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
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CPE = "cpe:/a:gitea:gitea";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.170095");
  script_version("2022-05-13T03:03:55+0000");
  script_tag(name:"last_modification", value:"2022-05-13 03:03:55 +0000 (Fri, 13 May 2022)");
  script_tag(name:"creation_date", value:"2022-05-04 14:10:49 +0000 (Wed, 04 May 2022)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-05-11 15:20:00 +0000 (Wed, 11 May 2022)");

  script_cve_id("CVE-2022-27313");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Gitea < 1.16.4 DoS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_gitea_http_detect.nasl");
  script_mandatory_keys("gitea/detected");

  script_tag(name:"summary", value:"Gitea is prone to a denial of service (DoS) vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"An arbitrary file deletion vulnerability allows attackers to
  cause a denial of service (DoS) via deleting the configuration file.");

  script_tag(name:"affected", value:"Gitea prior to version 1.16.4.");

  script_tag(name:"solution", value:"Update to version 1.16.4 or later.");

  script_xref(name:"URL", value:"https://github.com/go-gitea/gitea/pull/19072");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if ( ! port = get_app_port( cpe:CPE ) )
  exit( 0 );

if ( ! infos = get_app_version_and_location( cpe:CPE, port:port, exit_no_version:TRUE ) )
  exit( 0 );

version = infos["version"];
location = infos["location"];

if ( version_is_less( version:version, test_version:"1.16.4" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"1.16.4", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );